Scouts are initiates to the Chapters (exception: Space Wolves), there is no chapter that revolves around scouts as primary troops. However, feel free to create your own chapter using only scouts and your custom scheme, or you could be unfluffy and even use an existing chapter.

Well i made my list and came up with fluff why there is so many scouts. Calgnar of ultramarines wanted to test out his new recruits in battle. So he called in teclis to come with a tactic and army to battle. Calgar is able to give support fir to them through a land raider and 2 preds. Here the army which will also be in the army section.

I'd be interested to see how this list fares against other armies, if you get a game in be sure to let us know! Also, you do not need to purchase camo cloaks for any squad Telion is attached to, as he confers his "Stealth" special rule onto any squad he joins.

Fluff wise you could proxy the special characters and create your own chapter. It could be a chapter on the road to recovery after a dredful situation where teh chapter lost a huge portion of its companies.